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Cases › IAD02IA076 · Part 121 airline

Fairchild Dornier DO-328-300ATLANTIC COAST AIRLINES

NEW YORK, NY, USA · 2002-07-28·N409FJ

0
fatal
0
serious
No injury
highest injury
—
damage
Replay the flight data4,001 samples · 96 parameters01:23:20.0 – 02:30:00.0AnalyseThe analystOne timeline · precedents · ask the docket · what the record saysGenerateInvestigation briefFacts, cause, recorder extremes, sequence, sourcesSourceNTSB docket5 documents on data.ntsb.gov

What happened

NTSB summary, verbatim

The crew reported a partial loss of flight display information shortly after departure, declared an emergency, and landed uneventfully at the departure airport. This was the operator's fourth reported instance where this type of event had occurred on this make/model airplane. As a result of the investigation, no failure could be identified that would have caused the loss of flight displays. In addition, the manufacturer reviewed the design of the electrical system and could not identify a design failure.

Probable cause

the Board's determination
The partial loss of flight display information for undetermined reasons.

Sequence of events

2 timed eventsfrom the FDR factual report · claude-sonnet-5
  1. about 1350 eastern daylight timeDeparture/Climbp.1
    Crew reported a loss of flight display information shortly after departure from LaGuardia International Airport
  2. about 1350 eastern daylight timeReturn/Landingp.1
    Crew declared an emergency and returned to LaGuardia International Airport, landing uneventfully

NTSB analysis

from the final report

The crew reported a partial loss of flight display information shortly after departure, declared an emergency, and landed uneventfully at the departure airport. This was the operator's fourth reported instance where this type of event had occurred on this make/model airplane. As a result of the investigation, no failure could be identified that would have caused the loss of flight displays. In addition, the manufacturer reviewed the design of the electrical system and could not identify a design failure.